2561701448564 has 12 divisors (see below), whose sum is σ = 4483452945888. Its totient is φ = 1280714892600.

The previous prime is 2561701448563. The next prime is 2561701448567. The reversal of 2561701448564 is 4658441071652.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2561701448563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33915482 + ... + 33990929.

It is an arithmetic number, because the mean of its divisors is an integer number (373621078824).

Almost surely, 2^{2561701448564} is an apocalyptic number.

It is an amenable number.

2561701448564 is a deficient number, since it is larger than the sum of its proper divisors (1921751497324).

2561701448564 is a wasteful number, since it uses less digits than its factorization.

2561701448564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67915846 (or 67915844 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 53.

The spelling of 2561701448564 in words is "two trillion, five hundred sixty-one billion, seven hundred one million, four hundred forty-eight thousand, five hundred sixty-four".